55690470 has 128 divisors (see below), whose sum is σ = 171694080. Its totient is φ = 12695040.

The previous prime is 55690457. The next prime is 55690471. The reversal of 55690470 is 7409655.

55690470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55690471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49939 + ... + 51041.

It is an arithmetic number, because the mean of its divisors is an integer number (1341360).

Almost surely, 2^55690470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55690470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85847040).

55690470 is an abundant number, since it is smaller than the sum of its proper divisors (116003610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55690470 is a wasteful number, since it uses less digits than its factorization.

55690470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 55690470 is about 7462.6047731338. The cubic root of 55690470 is about 381.8800414616.

The spelling of 55690470 in words is "fifty-five million, six hundred ninety thousand, four hundred seventy".